Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
1 × 10 = ______
40 + 10 = ______
25 − 10 = ______
9 × 10 = ______
37 − 10 = ______
53 − 10 = ______
7 × 10 = ______
46 − 10 = ______
83 + 20 = ______
39 + 20 = ______
2 × 10 = ______
94 − 10 = ______
90 − 10 = ______
8 × 10 = ______
40 + 20 = ______
64 − 10 = ______
41 + 10 = ______
27 − 10 = ______
85 + 20 = ______
60 + 20 = ______
